not having acquired a habit or toleranceunacclimated to the intense heat of the tropics
unacclimated to the intense heat of the tropics
unaccustomed, unadapted, unadjusted, unused
unseasoned
acclimated, accustomed, adapted, adjusted, habituated, used
unaffected, uninfluenced
in 1846
英语同义词词典收录了63618条英语词条，基本涵盖了全部常用同义词或反义词的辨析及翻译，是英语学习的有利工具。